Platform-wheel.



J. H. CARR. PLATFORM WHEEL.

APPLICATION FILED SEPT. 17, 1.912.

Patented July 29, 1913.

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PLATFORM-WELLEEL.

' Specification of Letters Patent.

Patented tutti ,29% wird..

Application led September 17, 1912. Serial Ito. 720,811?.

State of California, have invented certain new and useful Improvements in Platform- Wheels, of which the following is a. full,`

clear, and exact specification.

The present invention relates to wheels for wagons, traction engines, and other vehicles of that type employing an endless iexible platform or track, on which the wheel proper moves, and which .progresses with it.

The primary'object is to provide a novelV structure of- 'tliis type, which is entirely piractic.edile',A is highly effective, and haswear-resisting. qualit-ies of a special character, in that the relatively movable partsaie l rotected from the ingress of dirt and the ike .y i

An embodiment 'of the invention is illus-l trated in the accompanying drawings,

wherein vFigure 1 is a side: elevation of a wheel with the associated yportion of the platform, parts being illustratedfin section; Fig. 2 is a detail plan view of a portion of the shoe member; Fig. 3 is a similar View of a portion of the interposed beltmember; Fig. d is a longitudinal sectionalyiew on an enlarged scale through one vof the shoe sections; Fig. 5 is a similar view through one of the belt sections; Fig; 6 is a detail cross sectional View' on the line 7 7 of Fig. 1; and Fig. 7 is an end view of a portion of the wheel member with the roller thereoven and the shoe and belt members removed.

Similar reference numerals designate corresponding parts in ell the figures of the drawings. f l i In the drawings a wheel member 8` is employed that is mounted in ,any suitable manner on a driving 'shaft 'or axle (not shown), said wheel member having a peripheral portion in which are formed sockets 9. An

endless shoe member extends around the' wheel member 8 Iandpcoinpi'isesa plurality of shoe lsections 1 0. Each section has` a rounded bearing surface 11 and inwardly extending l side4 `flanges or walls 12 saidl flanges or walls forming in effect a channel. rlhe rounded surfaces 11, besides giving the propery curved form to the shoe member when passingv around the wheel member, also eliminates the spatting of the sections as they engage the ground or surface over which they travel. The inner faces of the sections 10 are also each provided with two sockets 13 and .14. The said sections nel', as for example, by spring plates 15, that extend across the joints between the sections andare suitably secured thereto. It will also be noted by reference to Figs. 2 and t that 4the side flanges 12 extend inwardly beyond the inner faces of the sections 1G and are cut away, as illustrated at 16, the cutaway portion being on one end of the fiance and of one sectionv on the opposite end of t e adjacent section. These portions are dis posed in overlapping relation, and stops are thereby roduced which limited the inward swinging movement of the sections with relation to each other. lt will also be observed that the sides of t-hesections 12 are beveled, and that the hinges are on the inner faces of the same. lVith this arrange are hinged together in any suitable man.

ment, the sections can swing with relation to each other, but their relative swinging movement isrestricted.

Interposed between the shoe member andl the wheel member, is an endless belt member, and this member is formed of sections 17 that are hingedly connected by strips or other suitable devices 18 'arranged on their outer sides. The opposite side edgesvof the 'sections 17 are beveled, as illustrated at 19,

which permits the necessary play of the sections, but limits their inward swinging movement, as will be evident by reference to Fig. 1.

The sections 17 are reinforced by flanges 2O located `at their end edges, and said sections are furthermore provided with inwardly extending teeth 21 that engage in the sockets 9 of the wheel at the upper and lower sides of said wheel as illustrated in v Fig. l. They are also provided on their outer surfaces with teeth 22, and the arrangement of the parts is such that each tooth 22 engages in the socket 13 of the adjacent shoe section above the wheel, as shown in Fig. 1, but engages in the socket 14 of said section beneath 'the wheel, as is also illustrated in Fig. 1. As a result, it

will be noted that the sections 17 bridge the joints between the sections 10 below the wheel, and consequent-ly at the point where the wheel bears thereupon. In this way, a tight joint is produced. There is also preferably employed over the outer faces of the sections 17, plates 23, shown in Fig. 3, which cover the margins of the hinges, and one or more rollers 24 are also preferably placed over the shoe members above thewheel and bear thereupon to maintain a proper engagement between the parts. In addition, the wheel -may be provided with shield plates 25 at its opposite sides, which plates extend just outside the flanges 12 and serve as dirt and dust guards.

Having thus fully described my invention what I claim as new and desire to secure by Letters Pat-ent is z- 1. In a structure of the character set forth, the combination with a rotary member, of an endless shoe member surrounding the same, and an endless belt member that is interposed between the rotary member and the shoe member and is detachably interlocked therewith.

2. lIn a structure of the character set forth, the combination with a rotary member, of an endless shoe member surrounding the same and comprising a pluralit of hingedly connected sections, and an en less belt member that is interposed between the rotary member and the shoe member, and is detachably interlocked with both.

3. In a structure of the character set forth, the combination with a rotary member, of an endless shoe member surrounding the same, and an endless belt member that is interposed between the rotary member andI the shoe member and comprising a plurality ofjointed sections' that detachably interlock with the rotary member and with the shoe member.

4. In a structure of the character set forth, the combination with a rotary member, of an endless shoe member comprising a plurality of hingedly connected sections, and an endless belt member that is interposed between the rotary member and the shoe member and comprises a plurality of hingedly connected sections, the sections of one endless member bridging the joints between those of the other.

5. In a structure of the character set forth, the combination with a Wheel, of an endlessshoe member comprising ointed sections, a-nd an endless member interposed between the wheel and shoe member and comprising sections that bridge the joints Locaties between the shoe sections on the lower side of the wheel.

G. In a structure of the character` set forth, the combination with a wheel having a plurality of sockets in its periphery, of an endless shoe member comprising a plurality of hingedly connected sections having sockets in their inner sides,'and an endless belt member interposed between the wheel and shoe member, andcomprising hingedly connected sections having teeth on their opposite sides that respectively engage in the sockets of the wheel and shoe member.

7. /In -a structure of the character set fort-h, the combination with a wheel, of an endless shoe member surrounding the same and comprising sections, hinges connecting the sections and located on the inner sides of the same, a belt member interposed between the wheel and shoe member and comprising sections, and hinges connecting said latter sect-ions and located on-the outer sides thereof. f

8. In a structure ofl the character set forth, the combination`with aewheel, of an endless shoe member comprising hingedly connected sections that 4are channeled on their inner sides, andan endless belt section interposed between the wheel and shoe section and having intertitting engagements with both, said belt member operating in the channels of the shoe sections.v Y

9. In a structure of the` character set forth, the combination with a wheel, of an endless shoe member operating about the same, and a belt member interposed between the wheel and shoe member, said belt member having engagement with one portion of the shoe member on one side` of the wheel ard .with a different portion on the opposite si e. v

10. In a structure of the character set forth, the combination with a wheel, of anv endless shoe member cooperating therewith and comprising hingedly connected sectionvs,'-

each having a plurality of sockets, and an endless belt member interposed between the wheel and shoe member, said belt member having projections, each of whichrengages i yin one socket ofthe shoe member onvone side of the wheel and a different socket of the shoe member on the opposite side of the wheel.

11. In a structure of the charac-ter set' forth, the combination with a wheel having` are beveled to limit their relativemovement V in one direction, said members being prov roller located overtheshoe member above A Witnessesz- "1,068,563` I v @I viciekfi with copereting teeth and sockets, 'y In testimony` whereof I .have signed my` the sections-0f the belt member bridging the name to this' specification in the presence joints between the section of the shoe memof two attesting witnesses.

ber on the under Side of the wheel, and a JOHN H. GARR.

the wheel to insure engagement between the ELLA EGGERT, upper portions of the members. v ANNIE F. WALKER. 

